Abstract
The research aimed to evaluate the effects of 3 types of substrate (containing the main ingredient being Bodhi sawdust, which was treated and mixed according to 3 different formulas) on the growth and productivity of red reishi mushrooms. The results of the study showed that, of the three types of research medium formulations, Bodhi sawdust treated long-term with incubating for 168 hours was the substrate for the highest mushroom yield, reaching 96.73 g\bag, showing through the indexes of the number of fruiting body bunches\bag (3.47 bunches), fruiting body thickness (1.09 cm), fruiting body diameter (14.8 cm), polysaccharide content of mushroom (2.128%). Meanwhile, the substrate containing 70% sawdust and 30% straw substrates had the highest mycelial growth rate (1.02 cm\day) and the shortest mycelial growth time (the mushroom silk covered the whole bag at 26.3 days). Compared with the above two types of media, the formula using sawdust for short-term treatment (incubated for 48 hours) is ineffective in both the mycelial growth and fruiting body formation stages. The obtained research results contribute to perfecting the production process of red reishi mushrooms on the substrate of agricultural by-products, reducing environmental pollution and bringing economic efficiency to the farmers.
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